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Networking Switching Methods Quiz

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Questions and Answers

What are two examples of the cut-through switching method?

QOS switching and fast-forward switching (correct)

QOS switching and store-and-forward switching

Store-and-forward switching and CRC switching

Fast-forward switching and fragment-free switching

What action will occur if a switch receives a frame and does not have the source MAC address in the MAC table?

The switch forwards the frame to the associated port.

The switch shares the MAC address table entry with any connected switches.

The switch adds it to its MAC address table associated with the port number.

The switch sends the frame to a connected router because the destination MAC address is not local. (correct)

What action will occur if a switch receives a frame and does have the source MAC address in the MAC table?

The switch shares the MAC address table entry with any connected switches.

The switch does not forward the frame.

The switch sends the frame to a connected router because the destination MAC address is not local.

The switch refreshes the timer on that entry. (correct)

What does cut-through switching involve?

<p>Forwarding the frame before it is fully received</p> Signup and view all the answers

What is the purpose of fragment-free switching?

<p>To check for errors in the first 64 bytes of the frame</p> Signup and view all the answers

Study Notes

Switching Methods

Cut-through switching method involves forwarding a frame as soon as the destination MAC address is read, without waiting for the entire frame to arrive.
Two examples of cut-through switching method are fast-forward and fragment-free switching.

MAC Table Operations

If a switch receives a frame and does not have the source MAC address in the MAC table, it will add the source MAC address to the table.
If a switch receives a frame and does have the source MAC address in the MAC table, it will not add it again and will simply forward the frame.

Fragment-Free Switching

Fragment-free switching involves waiting for the first 64 bytes of a frame to arrive before forwarding it, to ensure that any fragments are not forwarded.
The purpose of fragment-free switching is to minimize the forwarding of invalid frames.

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Description

Test your knowledge of networking switching methods and switch behavior with this quiz. Identify examples of cut-through switching methods and understand how switches handle incoming frames when the source MAC address is not in the MAC table.